For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-6335

Dual-Lite 12709 High Performance Replacement Battery

Sale price $101.24 USD Regular price $122.23
Shipping calculated at checkout.

➤ Meets or exceeds OEM SLA battery specifications for reliable performance

➤ Absorbent Glass Mat (AGM) technology ensures enhanced safety and durability

➤ Maintenance-free and spill-proof design for hassle-free use

➤ U.L. Recognized and CE Certified for quality assurance and safety

➤ Includes 1-year warranty and factory fresh for dependable long life


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 26 Ah

Terminal Type

Nut & Bolt

Replacement Dual-Lite 12709 Emergency Lighting Battery — Compatible with Dual-Lite 12709

Designed as a direct replacement for the Dual-Lite 12709, this replacement battery delivers dependable compatibility, consistent performance, and proven reliability for your emergency lighting systems. Built with AGM technology and a maintenance-free, spill-proof design, the Dual-Lite 12709 replacement battery is a high-performance battery engineered to provide trusted backup power when you need it most. Whether you are servicing emergency fixtures, security systems, or medical equipment, this long-lasting battery offers peace of mind and straightforward installation.

Key Specifications

  • Compatible Model: Dual-Lite 12709
  • Battery Type: Sealed Lead Acid (SLA)
  • Construction: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free
  • Safety: Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Voltage: 12 Volts
  • Capacity: 26 Ah
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Meets or exceeds OEM SLA battery specifications

Benefits

This Dual-Lite 12709 replacement battery offers exceptional durability and performance in a compact, maintenance-free package. AGM construction protects internal plates and electrolyte for enhanced vibration resistance and a lower self-discharge rate, contributing to a long life and reliable standby performance. As a high-performance battery, it supplies steady voltage under load to keep emergency lighting, fire alarm circuitry, and security systems operational during outages.

Durability is built in: the spill-proof, sealed design reduces maintenance needs and eliminates acid handling, while U.L. Recognition and CE certification ensure compliance with industry safety standards. The nut & bolt terminal provides a secure electrical connection for installations that require robust mechanical fastening, making replacements fast and dependable.

Typical applications include emergency lighting, security alarms, and fire alarms listed in the product specifications, and it is equally well-suited for UPS backup, emergency power panels, and various power tools that accept SLA batteries. Its brand-new condition and one-year warranty further secure your investment and reduce downtime for critical systems.

Ready to replace your Dual-Lite 12709? Buy this long-lasting battery now to restore reliable backup power. Orders for in-stock items typically ship within 24 hours — purchase your high-performance replacement battery today and get dependable service and value.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.